*Donald Glover is playing musical chairs within NBC’s Thursday night lineup.

The “Community” star guest star on 30 Rock’s live episode as a younger version of Tracy Morgan’s eccentric character, Tracy Jordan, an NBC spokesperson confirmed to The Hollywood Reporter.

“Donald does an excellent Tracy Morgan-slash-Jordan impression,” “30 Rock” Executive Producer Robert Carlock tells TVLine.com, who broke the news.

With the casting, Glover will be pulling off a homecoming. He wrote for “30 Rock” for three years before joining “Community.” In fact, this also won’t be the first time he has stood in for Morgan. Apparently, he did the vocals on an extended version of the season one jingle, “Werewolf Bar Mitzvah.”

“I don’t think you can tell,” Carlock says. “It’s pretty remarkable. All the spoken stuff is Donald doing Tracy.”

This also wouldn’t be the first time “30 Rock” switched actors during a live episode. During the first one in 2010, Julia Louis-Dreyfus stood in for Tina Fey’s Liz Lemon.

The live episode of “30 Rock” airs on Thursday, April 26 at 8:30 p.m. on NBC.